11331231113 has 2 divisors, whose sum is σ = 11331231114. Its totient is φ = 11331231112.

The previous prime is 11331231101. The next prime is 11331231157. The reversal of 11331231113 is 31113213311.

11331231113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11043487744 + 287743369 = 105088^2 + 16963^2 .

It is an emirp because it is prime and its reverse (31113213311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11331231113 - 2⁸ = 11331230857 is a prime.

It is not a weakly prime, because it can be changed into another prime (11331234113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665615556 + 5665615557.

It is an arithmetic number, because the mean of its divisors is an integer number (5665615557).

Almost surely, 2^11331231113 is an apocalyptic number.

It is an amenable number.

11331231113 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331231113 is an equidigital number, since it uses as much as digits as its factorization.

11331231113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162, while the sum is 20.

Adding to 11331231113 its reverse (31113213311), we get a palindrome (42444444424).

The spelling of 11331231113 in words is "eleven billion, three hundred thirty-one million, two hundred thirty-one thousand, one hundred thirteen".